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Database: UniProt/TrEMBL
Entry: C1N9I3_MICPC
LinkDB: C1N9I3_MICPC
Original site: C1N9I3_MICPC 
ID   C1N9I3_MICPC            Unreviewed;       204 AA.
AC   C1N9I3;
DT   26-MAY-2009, integrated into UniProtKB/TrEMBL.
DT   26-MAY-2009, sequence version 1.
DT   03-MAY-2023, entry version 59.
DE   RecName: Full=Ribulose bisphosphate carboxylase small subunit, chloroplastic {ECO:0000256|HAMAP-Rule:MF_00860};
DE            Short=RuBisCO small subunit {ECO:0000256|HAMAP-Rule:MF_00860};
GN   Name=RBCS {ECO:0000256|HAMAP-Rule:MF_00860};
GN   ORFNames=MICPUCDRAFT_37117 {ECO:0000313|EMBL:EEH51529.1};
OS   Micromonas pusilla (strain CCMP1545) (Picoplanktonic green alga).
OC   Eukaryota; Viridiplantae; Chlorophyta; Mamiellophyceae; Mamiellales;
OC   Mamiellaceae; Micromonas.
OX   NCBI_TaxID=564608 {ECO:0000313|Proteomes:UP000001876};
RN   [1] {ECO:0000313|EMBL:EEH51529.1, ECO:0000313|Proteomes:UP000001876}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CCMP1545 {ECO:0000313|EMBL:EEH51529.1,
RC   ECO:0000313|Proteomes:UP000001876};
RX   PubMed=19359590; DOI=10.1126/science.1167222;
RA   Worden A.Z., Lee J.H., Mock T., Rouze P., Simmons M.P., Aerts A.L.,
RA   Allen A.E., Cuvelier M.L., Derelle E., Everett M.V., Foulon E.,
RA   Grimwood J., Gundlach H., Henrissat B., Napoli C., McDonald S.M.,
RA   Parker M.S., Rombauts S., Salamov A., Von Dassow P., Badger J.H.,
RA   Coutinho P.M., Demir E., Dubchak I., Gentemann C., Eikrem W., Gready J.E.,
RA   John U., Lanier W., Lindquist E.A., Lucas S., Mayer K.F., Moreau H.,
RA   Not F., Otillar R., Panaud O., Pangilinan J., Paulsen I., Piegu B.,
RA   Poliakov A., Robbens S., Schmutz J., Toulza E., Wyss T., Zelensky A.,
RA   Zhou K., Armbrust E.V., Bhattacharya D., Goodenough U.W., Van de Peer Y.,
RA   Grigoriev I.V.;
RT   "Green evolution and dynamic adaptations revealed by genomes of the marine
RT   picoeukaryotes Micromonas.";
RL   Science 324:268-272(2009).
CC   -!- FUNCTION: RuBisCO catalyzes two reactions: the carboxylation of D-
CC       ribulose 1,5-bisphosphate, the primary event in carbon dioxide
CC       fixation, as well as the oxidative fragmentation of the pentose
CC       substrate. Both reactions occur simultaneously and in competition at
CC       the same active site. Although the small subunit is not catalytic it is
CC       essential for maximal activity. {ECO:0000256|HAMAP-Rule:MF_00860,
CC       ECO:0000256|RuleBase:RU003627}.
CC   -!- SUBUNIT: Heterohexadecamer of 8 large and 8 small subunits.
CC       {ECO:0000256|HAMAP-Rule:MF_00860, ECO:0000256|RuleBase:RU003627}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast {ECO:0000256|HAMAP-
CC       Rule:MF_00860}.
CC   -!- MISCELLANEOUS: The basic functional RuBisCO is composed of a large
CC       chain homodimer in a 'head-to-tail' conformation. In form I RuBisCO
CC       this homodimer is arranged in a barrel-like tetramer with the small
CC       subunits forming a tetrameric 'cap' on each end of the 'barrel'.
CC       {ECO:0000256|HAMAP-Rule:MF_00860}.
CC   -!- SIMILARITY: Belongs to the RuBisCO small chain family.
CC       {ECO:0000256|HAMAP-Rule:MF_00860, ECO:0000256|RuleBase:RU003627}.
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DR   EMBL; GG663751; EEH51529.1; -; Genomic_DNA.
DR   RefSeq; XP_003064624.1; XM_003064578.1.
DR   AlphaFoldDB; C1N9I3; -.
DR   STRING; 564608.C1N9I3; -.
DR   GeneID; 9689899; -.
DR   KEGG; mpp:MICPUCDRAFT_37117; -.
DR   eggNOG; ENOG502QT0M; Eukaryota.
DR   OMA; QECRREF; -.
DR   OrthoDB; 5482775at2759; -.
DR   Proteomes; UP000001876; Unassembled WGS sequence.
DR   GO; GO:0009507; C:chloroplast; IEA:UniProtKB-SubCell.
DR   GO; GO:0016984; F:ribulose-bisphosphate carboxylase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009853; P:photorespiration; IEA:UniProtKB-UniRule.
DR   GO; GO:0019253; P:reductive pentose-phosphate cycle; IEA:UniProtKB-UniRule.
DR   CDD; cd03527; RuBisCO_small; 1.
DR   Gene3D; 3.30.190.10; Ribulose bisphosphate carboxylase, small subunit; 1.
DR   HAMAP; MF_00859; RuBisCO_S_bact; 1.
DR   InterPro; IPR024681; RuBisCO_ssu.
DR   InterPro; IPR000894; RuBisCO_ssu_dom.
DR   InterPro; IPR036385; RuBisCO_ssu_sf.
DR   PANTHER; PTHR31262; RIBULOSE BISPHOSPHATE CARBOXYLASE SMALL CHAIN 1, CHLOROPLASTIC; 1.
DR   Pfam; PF00101; RuBisCO_small; 1.
DR   PRINTS; PR00152; RUBISCOSMALL.
DR   SMART; SM00961; RuBisCO_small; 1.
DR   SUPFAM; SSF55239; RuBisCO, small subunit; 1.
PE   3: Inferred from homology;
KW   Calvin cycle {ECO:0000256|ARBA:ARBA00022567, ECO:0000256|HAMAP-
KW   Rule:MF_00860};
KW   Carbon dioxide fixation {ECO:0000256|ARBA:ARBA00023300, ECO:0000256|HAMAP-
KW   Rule:MF_00860}; Chloroplast {ECO:0000256|HAMAP-Rule:MF_00860};
KW   Photorespiration {ECO:0000256|ARBA:ARBA00023238, ECO:0000256|HAMAP-
KW   Rule:MF_00860};
KW   Photosynthesis {ECO:0000256|ARBA:ARBA00022531, ECO:0000256|HAMAP-
KW   Rule:MF_00860};
KW   Plastid {ECO:0000256|HAMAP-Rule:MF_00860, ECO:0000256|RuleBase:RU003627};
KW   Reference proteome {ECO:0000313|Proteomes:UP000001876}.
FT   DOMAIN          38..154
FT                   /note="Ribulose bisphosphate carboxylase small subunit"
FT                   /evidence="ECO:0000259|SMART:SM00961"
FT   REGION          160..204
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   204 AA;  22080 MW;  303EF93E6DC93499 CRC64;
     MAALCSVAPV VAKVPAVSTG KASKSSAMQV WNPTNNKFFE TFSFLPPLSD QEIARQVQYL
     INNGWAPCIE FEGAGKAYCD THGWSGLDSS VNAGYYDNRY WVMWKLPMYG CTSPDEVLAE
     VRACTRAFPD CFIRVAGFDN IKQVQCSSFL AHRPANDRTF QPVTGRQVGD GSDGRAAPAA
     PSGGGDSGMS GGFTPKPPQQ NYSW
//
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